I recently bought a pair of HD497s, which I like pretty much as my first pair of decent headphones. Because of my sources (soundcard and PCDP) and reading that the HD497 can benefit from a headphone amp, I'm thinking of building an amp, both as an excerise, and useful part of equipment. The...

I'm looking for advice and opinions on a pair of headphones... Anyway, I've got the following list of 'requirements': - for listening to (mainly) classical music - shouldn't need an amp (i.e. I should be able to use it with my PCDP, a Sony D-EJ815) - but also for plugging into my soundcard...